C#中获取FTP服务器文件

1、从ftp下载pdf的方法

public static void DownloadPdfFileFromFtp(string ftpUrl,string user,string password string localPath)

{

// 创建FtpWebRequest对象
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpUrl);
request.Method = WebRequestMethods.Ftp.DownloadFile;
request.Credentials = new NetworkCredential(username, password);
// 使用WebResponse获取响应
using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
{
    // 获取文件流
    Stream responseStream = response.GetResponseStream();

    // 创建文件流写入器，将数据写入本地文件
    using (FileStream fileStream = new FileStream(localPath, FileMode.Create))
    {
        byte[] buffer = new byte[1024];
        int bytesRead = 0;
        while ((bytesRead = responseStream.Read(buffer, 0, buffer.Length)) != 0)
        {
            fileStream.Write(buffer, 0, bytesRead);
        }
    }
}

}

2、创建指定路径的文件夹

string tempPath = "C:\\ftpfile\\";

//用DirectoryInfo拼接路径
DirectoryInfo di = new DirectoryInfo(string.Format(@"{0}\{1}", tempPath, "图纸PDF"));
if (!di.Exists)
{
    di.Create();
}
string filepdf = di.FullName + "\\" + "图纸_" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".pdf";

3、调用

string user="用户名";

string password="密码"；
DownloadPdfFileFromFtp(ftpServerUrl, user，password，filepdf);